pub struct Transaction<H>(pub Vec<Change<H>>);
Expand description

A series of changes to the database that can be committed atomically. They do not take effect until passed into Database::commit.

Tuple Fields

0: Vec<Change<H>>

Implementations

Create a new transaction to be prepared and committed atomically.

Set the value of key in col to value, replacing anything that is there currently.

Set the value of key in col to value, replacing anything that is there currently.

Remove the value of key in col.

Store the preimage of hash into the database, so that it may be looked up later with Database::get. This may be called multiple times, but subsequent calls will ignore preimage and simply increase the number of references on hash.

Increase the number of references for hash in the database.

Release the preimage of hash from the database. An equal number of these to the number of corresponding stores must have been given before it is legal for Database::get to be unable to provide the preimage.

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Returns the “default value” for a type. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.